sintered clay

expanded clay

Clay which has been heated to a semiplastic condition and expanded to many times its original volume by the formation of internal gas; used as a lightweight aggregate.
References in periodicals archive ?
The sintering temperature in this study is mainly determined by reference to the sintering temperature of the high-temperature sintered clay ceramsite, and the sintering time ranges from 6 to 15 minutes [18].
As expected the disagglomeration efficiency of a PP/MMT nanocomposite is increased in the following order: "sintered clay" < "Na + clay" < "organo-modified clay" < "organo-modified clay + compatibilizer".